Remove errno.h include from _scm.h.

* libguile/_scm.h: Remove errno.h include.
* libguile/bytevectors.c:
* libguile/debug.c:
* libguile/finalizers.c:
* libguile/loader.c:
* libguile/poll.c:
* libguile/strings.c:
* libguile/threads.c:
* libguile/vm.c: Add errno.h include.  Sort includes as needed.

libguile/_scm.h

@@ -32,7 +32,6 @@
  and differences between _scm.h and __scm.h.
  **********************************************************************/
 
-#include <errno.h>
 #include <verify.h>
 #include <alignof.h>
 #include "libguile/__scm.h"

libguile/bytevectors.c

@@ -26,6 +26,7 @@
 #endif
 
 #include <byteswap.h>
+#include <errno.h>
 #include <striconveh.h>
 #include <uniconv.h>
 #include <unistr.h>

libguile/debug.c

@@ -1,5 +1,6 @@
 /* Debugging extensions for Guile
- * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation
+ * Copyright (C) 1995-2003,2006,2008-2013,2018
+ *   Free Software Foundation
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -22,6 +23,8 @@
 # include <config.h>
 #endif
 
+#include <errno.h>
+
 #ifdef HAVE_GETRLIMIT
 #include <sys/time.h>
 #include <sys/resource.h>

libguile/finalizers.c

@@ -23,6 +23,7 @@
 # include <config.h>
 #endif
 
+#include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
 

libguile/loader.c

@@ -34,6 +34,7 @@
 #include <assert.h>
 #include <alignof.h>
 #include <byteswap.h>
+#include <errno.h>
 #include <verify.h>
 
 #include <full-read.h>

libguile/poll.c

@@ -25,6 +25,7 @@
 #  include <config.h>
 #endif
 
+#include <errno.h>
 #include <poll.h>
 
 #include "libguile/_scm.h"

libguile/strings.c

@@ -1,5 +1,5 @@
-/* Copyright (C) 1995, 1996, 1998, 2000, 2001, 2004, 2006,
+/* Copyright (C) 1995-1996,1998,2000-2001,2004,2006,2008-2016,2018
- *   2008-2016 Free Software Foundation, Inc.
+ *   Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -27,6 +27,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <ctype.h>
+#include <errno.h>
 #include <uninorm.h>
 #include <unistr.h>
 #include <uniconv.h>

libguile/threads.c

@@ -22,35 +22,29 @@
 # include <config.h>
 #endif
 
-#include "libguile/bdw-gc.h"
+#include <assert.h>
-#include <gc/gc_mark.h>
+#include <errno.h>
-#include "libguile/_scm.h"
+#include <fcntl.h>
-#include "libguile/deprecation.h"
+#include <full-read.h>
-#include "libguile/extensions.h"
+#include <nproc.h>
-#include "libguile/hashtab.h"
-
-#include <stdlib.h>
-#include <unistd.h>
 #include <stdio.h>
-
+#include <stdlib.h>
-#ifdef HAVE_STRING_H
 #include <string.h>   /* for memset used by FD_ZERO on Solaris 10 */
-#endif
+#include <sys/select.h>
-
-#if HAVE_SYS_TIME_H
 #include <sys/time.h>
-#endif
+#include <unistd.h>
 
 #if HAVE_PTHREAD_NP_H
 # include <pthread_np.h>
 #endif
 
-#include <sys/select.h>
+#include "libguile/bdw-gc.h"
-
+#include <gc/gc_mark.h>
-#include <assert.h>
-#include <fcntl.h>
-#include <nproc.h>
 
+#include "libguile/_scm.h"
+#include "libguile/deprecation.h"
+#include "libguile/extensions.h"
+#include "libguile/hashtab.h"
 #include "libguile/validate.h"
 #include "libguile/eval.h"
 #include "libguile/async.h"
@@ -67,8 +61,6 @@
 #include "libguile/strings.h"
 #include "libguile/vm.h"
 
-#include <full-read.h>
-
 
 
 

libguile/vm.c

@@ -20,12 +20,13 @@
 #  include <config.h>
 #endif
 
-#include <stdlib.h>
-#include <alloca.h>
 #include <alignof.h>
+#include <alloca.h>
+#include <errno.h>
 #include <math.h>
-#include <string.h>
 #include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #ifdef HAVE_SYS_MMAN_H